K. Jockers

TL;DR: In this article, the TAUS instrument on Phobos 2 was designed to measure the energy per charge and angular spectra of three species of ions, H+ and He2+ characteristic of the solar wind and heavy ions collected in one integral channel covering the mass per charge (M/q) range 3 to infinite.

TL;DR: The three-dimensional positive ion analyzer aboard the Giotto spacecraft has been used to study the interaction between protons and alpha-particles in the solar wind and positive ions from comet Halley as discussed by the authors.

TL;DR: The bow shock of a comet is formed by the interaction of three different particle populations; solar wind ions, cometary ions and electrons as discussed by the authors, and it is a complex structure with high-amplitude waves in the cometary ion foot of the shock preceding a permanent drop in the solar wind speed.

TL;DR: The Johnstone Plasma Analyser on Giotto operated almost continuously for two days before the encounter with comet Halley as mentioned in this paper, making observations of the proton and alpha particle distributions in the solar wind with 8 seconds time resolution.

TL;DR: In this paper, the authors present a comparative study of the solar wind electrons and protons and the cometary pick-up ions measured by Giotto at the inbound crossing of the bow shock at comet Halley.